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Published byFrancine Harrison Modified over 9 years ago
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Dairy Management Chris Ellason
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4 groups of dairy cows Far- off dry cows: Cows from time quit producing milk until 21 days before calving Close up dry cows: Within 21 days of calving Fresh Cows: Cows that recently calved Lactating Cows: Cows that are producing milk in the milking string
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Calves Aloud to get colostrum then removed Bull calves fed for veal or castrated and fed for beef Heifers are grown, bred, and milked for at least one lactation Calves are put into individual pens and fed milk or milk replacer for 4-8 weeks Given hay and grains to get them to start eating dry feeds
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Breeding Most are bred by artificial Insemination Sexed semen Some embryo transfer Very little natural service
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Ration Far- off: 100% forage Close up: 75% forage Fresh: 65-75% forage Lactating: 50-60% forage
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Problems Dystocia: Problems calving Milk Fever: Ca deficiency Retained Placenta: Caused by genetics, dystocia, K overload, Vitamin E deficiency Cows show to produce 5-8% less milk lifetime Mastitis: Infection in the udder
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Terminology SCC: Somatic Cell Count Amount of cells that are in the milk Max SCC: 750,000 SCC/ liter Primiparous: Cow that has had only one calf Multiparous: Cow that has had multiple calves DIM: Days in milk
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Various Milking Parlors Single side opening Rotary tandem Rotary herringbone Double herringbone Turnstyle Polygon herringbone Trigon
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